Field serviceable and replaceable display assembly

ABSTRACT

A field serviceable apparatus includes a first and second display assembly hingedly mounted to a frame in a back to back arrangement. At least one of the display assemblies has a transparent layer, an electronic display, a first channel that receives circulating gas, and a second channel that receives ambient air. A cavity is located in the space between the rear surfaces of the display assemblies and the frame and contains a fixed plate for receiving electronic components. The cavity and the first channel are part of a closed loop pathway, while the second channel is part of an open loop pathway.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of U.S. Provisional Patent Application Ser. No. 62/491,106 filed Apr. 27, 2017 and U.S. Provisional Patent Application Ser. No. 62/502,337 filed May 5, 2017. The disclosures of which are hereby incorporated by reference in their entirety.

TECHNICAL FIELD

Exemplary embodiments of the present invention relate generally to assemblies for electronic displays.

BACKGROUND AND SUMMARY OF THE INVENTION

Electronic displays have grown in popularity not only for indoor use, but also for outdoor use. One exemplary application, without limitation, is the digital out of home advertising market where the electronic displays are increasingly replacing the use of static posters. The use of electronic displays is advantageous because they allow images to be changed quickly as well as permit the use of videos and interactive displays, among other benefits. Such displays have been placed in many locations, including but not limited, on billboards, the tops of vehicles, bus shelters, kiosks, sidewalks, stadiums, buildings, and the like.

Such outdoor, and some indoor, displays are often encased in a housing to protect them from environmental conditions and to hold various electronic components that are used to operate the displays. Despite efforts to protect the display from environmental conditions and other potential hazards, failures of the displays themselves and their related electronic components do occur. When such failures occur, it is often necessary to repair, replace, or otherwise service (hereinafter also collectively, “servicing” or “service”) the displays themselves or their various electronic components. Even when such failures have not occurred, it may be desirable to access the displays or the various electronic components thereof to perform routine or preventative maintenance, or simply for inspection purposes. It may also be desirable to provide a sealed, powered, connected, and/or cooled cavity for electronic equipment. Finally, it may be desirable to change the configuration of the assembly. For example, without limitation, it may be desirable to convert a double sided electronic display into an electronic display on one side with a static poster display on the other. Current assemblies for electronic displays make it difficult or impossible to service the display and the related electronic components. Therefore, what is needed is a field serviceable and replaceable assembly for an electronic display.

Further, such assemblies are generally connected to external power sources and communications networks. Such connections often require interaction with utility lines. Interaction with these utility lines generally subjects any servicing work to additional regulations and requires technicians having specialized knowledge. Such efforts generally increase the costs, time, and effort involved with such servicing. Therefore, what is needed is a field serviceable and replaceable assembly for an electronic display.

The present invention is a field serviceable and replaceable assembly for an electronic display. A single display assembly or a back-to-back pair of display assemblies may be hingedly mounted to a frame. More specifically, the assembly may comprise a frame configured to receive, in a back to back configuration, one or more digital displays, one or more covers, one or more poster holders (illuminated or not illuminated), or some combination thereof. A closed loop of circulating gas and an open loop of ambient air may flow through the assembly. The frame may be surrounded, at least in part, by a housing. In exemplary embodiments utilizing back-to-back display assemblies, the frame and the display assemblies may enclose an electronics cavity. Each display assembly may be hingedly connected to an upper portion of the frame and may be configured to swing outwardly to allow access to electronic components located in an electronics cavity. The cavity may be sealed, cooled, powered, and/or connected for electronic equipment. Some electronic components may be mounted to a plate located between the two display assemblies. In other embodiments, the plate (along with the electronic components) may be mounted to one of the display assemblies or may form a part of the respective display assembly.

In exemplary embodiments utilizing a single display assembly, the display assembly may be similarly mounted. However, an access panel may enclose the rear of the assembly such that the electronics cavity may also be accessed from the rear. The access panel may additionally be configured to receive a poster.

Regardless, a pair of aid devices may be utilized with each display assembly or access panel to assist in moving the display assembly between the open and the closed position as well as secure the display assembly in the open or closed position. In exemplary embodiments, a number of the electronic components may be shared for both display assemblies so as to reduce the total number of electronic components required. The aid devices may also assist in securing the display assembly in the open or the closed position. The display assemblies and/or the access panel may be opened to service the electronic components and the display assemblies. When necessary, the display assembly itself may be removed from the frame and replaced.

The one or more digital displays, one or more covers, and one or more poster holders may be mechanically attached to the frame by way of a bracket and a pin, which may be configured to serve as the main, or only, mechanical support for the one or more digital displays, one or more covers, and one or more poster holders. In this way, the digital displays, covers, or poster holders may be easily and quickly removed from the frame for servicing. In exemplary embodiments, external power and communications connections may be located on the frame or on a plate located between the one or more digital displays, one or more covers, one or more poster holders such that servicing of the one or more digital displays, one or more covers, one or more poster holders can be performed by disconnecting the power and communications at the connection point rather than disturbing the connection to the utility lines. In this way, the external power and communications connections may often remain undisturbed.

BRIEF DESCRIPTION OF THE DRAWINGS

In addition to the features mentioned above, other aspects of the present invention will be readily apparent from the following descriptions of the drawings and exemplary embodiments, wherein like reference numerals across the several views refer to identical or equivalent features, and wherein:

FIG. 1 is a front perspective view of an exemplary assembly in accordance with the present invention;

FIG. 2 is a front perspective of the assembly of FIG. 1 illustrated with the stand removed to illustrate additional components of the assembly;

FIG. 3 is a front perspective of the assembly of FIG. 2 illustrated with one of the assemblies in the open position;

FIG. 4 is a front perspective view of the assembly of FIG. 2 illustrated with one of the assemblies removed;

FIG. 5 is a front perspective view of the assembly of FIG. 4, illustrated with exemplary flow paths for circulating gas and ambient air;

FIG. 6 is a top sectional view of an exemplary display assembly illustrated in isolation from other components to illustrate exemplary flow paths for circulating gas and ambient air;

FIG. 7 is a front perspective view of another exemplary embodiment of the assembly also indicating section lines A-A and B-B;

FIG. 8 is a front perspective view of the assembly of FIG. 7 illustrated with both display assemblies in the open position;

FIG. 9 is an exploded front perspective view of the assembly of FIG. 8;

FIG. 10 is a top sectional view taken along section line A-A of FIG. 7;

FIG. 11 is a side sectional view taken along section line B-B of FIG. 7;

FIG. 12A is a rear perspective view of another exemplary assembly;

FIG. 12B is a rear perspective view of another exemplary assembly;

FIG. 13 is a front perspective view of another exemplary assembly also indicating Detail A;

FIG. 14 is a front perspective view of the assembly of FIG. 13 illustrated with one of the display assemblies in the open position;

FIG. 15 is a rear perspective view of the assembly of FIG. 13 illustrated with both of the display assemblies in the open position also indicating Detail B;

FIG. 16 is a front perspective view of the assembly of FIG. 14 illustrated with one of the display assemblies removed;

FIG. 17 is a detailed top perspective view of Detail A of FIG. 13;

FIG. 18A is a detailed perspective view of Detail B of FIG. 15 with the display assembly in the closed position and illustrating an otherwise hidden strut; and

FIG. 18B is a detailed top perspective view of the assembly of FIG. 18A illustrated with the display assembly in the open position.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENT(S)

Various embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, specific details such as detailed configuration and components are merely provided to assist the overall understanding of these embodiments of the present invention. Therefore, it should be apparent to those skilled in the art that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

FIG. 1 is a front perspective view of an exemplary assembly 10 in accordance with the present invention. The assembly 10 may comprise one or more display assemblies 14 placed within a housing 6. The housing 6 may comprise a stand 8 for mounting the assembly 10 to the ground. However, in other exemplary embodiments, the assembly 10 may be mounted to another object such as, but not limited to, a bus shelter, a post, a wall, a building, a roof rack for a vehicle, or the like. Regardless, an intake 16 may be located on the top of the housing 6. As will be described in greater detail herein, an exhaust 9 may be located on the bottom of the housing 6. However, it is contemplated that the intake 16 may be located on the bottom of the housing 6 with the exhaust 9 being located on the top of the housing 6. Any other location for the intake 16 and the exhaust 9 is contemplated. Regardless, the intake 16 may likewise extend through the frame 12. Similarly, the exhaust 9 may extend through the frame 12.

FIG. 2 is a front perspective of the assembly 10 of FIG. 1 illustrated with the stand 6 removed to illustrate additional components of the assembly 10. The display assemblies 14 may be mounted to a frame 12. The frame 12 may be substantially rectangular in shape and may have interior and exterior surfaces or panels. The frame 12 may be configured to receive a first and second display assembly 14 in a back to back arrangement. The display assemblies 14 may comprise digital displays, covers (i.e., access panels), poster holders (illuminated or unilluminated), some combination thereof, or the like. The poster holders may be configured to receive a static poster and may be back or edge illuminated. In exemplary embodiments, the covers and the poster holders may serve as access panels, though any of the foregoing may be moved or removed to allow access to the interior of the assembly 10. For example, without limitation, the assembly 10 may comprise two electronic displays placed back-to-back, or a single electronic display placed back-to-back with a poster holder. Regardless, the frame 12 may be configured to be connected to the stand 8, another object, or directly to the ground.

As will be explained in greater detail herein, the assembly 10 may further comprise an electronics cavity 18 for storing electronic components 30 for operating the assembly 10. The electronics cavity 18 may be located in the space between the display assemblies 14 and the frame 12. Stated another way, the first and second display assemblies 14 may share a common electronics cavity 18.

FIGS. 1 and 2 illustrate the display assemblies 14 in a closed position such that the display assemblies 14 are in contact with the frame 12 or are located substantially parallel to the ground. As will be explained in greater detail herein, the display assemblies 14 may be hingedly mounted to the frame 12 by way of a hinging device 22. A first and second hinging device 22 may be located on either side of the frame 12 so as to connect the first and second display assembly 14 to the frame 12 in a hinged fashion. The first and second hinging devices 22 may be the same or may be different. For example, without limitation, the hinging devices 22 used to hingedly mount a display assembly 14 comprising a digital display may be the same or may be different from the hinging device 22 used to mount a display assembly comprising a poster holder. In exemplary embodiments, the hinging devices 22 may be located on an upper portion of the frame 12, such that the display assemblies 14 rotate outward along a substantially horizontal axis. In other exemplary embodiments, the hinging devices 22 may be located along an edge of the frame 12, such that the display assemblies 14 rotate outward along a substantially vertical axis. Any location of the hinging devices 22 is contemplated.

FIG. 3 is a front perspective view of the assembly 10 of FIG. 2 illustrated with one of the display assemblies 14 in an open position. The display assembly 14 may rotate via the hinging device 22 into the opened position such that the bottom of the display assembly 14 is swung outward and away from the frame 12. This may allow access to the electronics cavity 18 such that personnel may service the electronic components 30 located therein.

The assembly 10 may further comprise a pair of aid devices 20, preferably having a first end and a second end, though such is not required. In exemplary embodiments, the aid devices 20 may be gas springs, though any type of aid device is contemplated. Such aid devices 20 may include, but are not limited to, any device which utilizes a mechanical advantage in order to assist is moving the display assemblies 14 between an open position or closed positions as well as, or alternatively, to temporarily secure the display assemblies 14 in the open position or closed position. Other exemplary aid devices 20 include, but are not limited to, struts, springs, block and tackle, counterweights, levers, gears, tethers, belts, chains, motors, screws, some combination thereof, or the like.

The first end of the aid devices 20 may be mounted to either side of the display assembly 14 and the second end of the aid devices 20 may be mounted to either side of the interior of the frame 12. In exemplary embodiments, the first end of the aid devices 20 is mounted lower relative to second end of the aid devices 20, though the opposite is contemplated. The aid devices 20 may be configured to assist with movement of the display assemblies 14 between the open and the closed positions as well as temporarily securing the display assemblies 14 in the opened or the closed positions.

In exemplary embodiments, the display assemblies 14 may be lockable to the frame 12 or the housing 6 such that the display assemblies 14 cannot normally be moved from the closed position unless unlocked. This may assist in restricting access to the electronics cavity 18 to authorized personnel.

FIG. 4 is a front perspective view of the assembly 10 of FIG. 2 illustrated with one of the display assemblies 14 removed so as to illustrate the electronics cavity 18. A gasket 28 may extend around the perimeter of either or both sides of the frame 12. The gaskets 28 may provide a substantially air tight seal when the display assemblies 14 are placed in the closed position. The gaskets 28 may ensure or assist in allowing the electronics cavity 18 to maintain a substantially air tight seal, though such is not required.

A plate 19 may be located in the electronics cavity 18 and the electronic components 30 may be mounted thereto. Alternatively, or in addition, an electronics plate 42 may be located in the electronics cavity 18. In exemplary embodiments, the electronics plate 42 may be mounted to the frame 12 such that the electronics plate 42 extends substantially parallel to the front surface of the electronic display assemblies 14. Similarly, in exemplary embodiments the plate 19 may be mounted to the rear surface of one or more of the display assemblies 14. However, any location and orientation of the plate 19 and the electronics plate 42 is contemplated.

The electronic components 30 may comprise any number of components used to operate the assembly 10 and its various components. Such electronic components 30 may include, but are not limited to, power sources, power distribution components, video players, video receiver boards, processors, electronic storage devices, communications equipment, wireless transmitter/receivers, network connectivity devices, printed circuit boards, and the like. In exemplary embodiments, a number of the electronic components 30 may be utilized to operate both display assemblies 14. For example, but not to serve as a limitation, at least the video players, video receiver boards, communications equipment, wireless transmitter/receivers, and network connectivity devices may be shared. This may reduce the number of electronic components 30 required. In exemplary embodiments, the plate 19 or the electronics plate 42 may comprise a server rack, though such is not required.

Each hinging device 22 may comprise a frame hinge plate 26 and a first and second display hinge plate 24. The frame hinge plate 26 may be located on the exterior panels on either side of an upper portion of the frame 12 such that the frame hinge plate 26 extends substantially perpendicular relative to the electronics plate 42. The display hinge plates 24 may be located on either side of an upper portion of each of the display assemblies 14 such that the display hinge plates 26 extend substantially perpendicular relative to the electronics plate 42. The display hinge plate 24 may comprise one or more notches or apertures corresponding to notches or apertures located on the frame hinge plate 26. Any number of fasteners 27 may extend through the corresponding notches or apertures in the display hinge plate 24 and the frame hinge plate 26 such that the frame hinge plate 26 may be hingedly secured to the display hinge plate 24. The fasteners 27 may include threaded fasteners, pins, bolts, screws, nails, or the like. This is merely exemplary, any type of hinge device 22 is contemplated. In exemplary embodiments, the frame hinge plates 26, the display hinge plates 24 and the fasteners 27 may be configured to serve as the main or sole mechanical attachment points for mounting the display assemblies 14 to the frame 12.

The hinge device 22 may provide for easy removal of one or both of the display assemblies 14 when servicing the assembly 10. The fasteners 27 may simply be removed from either side of the display assembly 14 and the entire display assembly 14 may be removed. Additionally, removal may require relatively minor additional steps such as, but not limited to, the disconnection of various electrical wires and other components as further described herein. A replacement display assembly 14 may then be installed. Installation may comprise, but is not limited to, moving the Additionally, installation of the new display assembly 14 may require relatively minor additional steps such as, but not limited to, the connection of the aforementioned various electrical wires and other components as further described herein. The display assembly 14 being serviced may then be returned to a service center for servicing. This may minimize downtime of the assembly 10.

Additionally, the assembly 10 may require connection to an external power source, communications network, and the like to operate. This may require connecting into utility lines. In exemplary embodiments, connection to said utility lines may be made through separate connectors 72 located on the frame 12, within the cavity 18, on the plate 19, on the electronics plate 42, or at another location. These connectors 72 may be connected to the other various electronic components 30 via electrical wiring, ethernet cable, telephone cable, axial cable, fiber optic cable, or the like. The disconnection and reconnection of such wiring from the connectors 72 may be required when removing or installing a display assembly 14. In this way, the connection into the utility lines may not be disturbed when servicing the assembly 10. In exemplary embodiments, the connectors 72 may also act as pass through devices 35.

FIG. 5 illustrates exemplary flow paths through the assembly 10 of FIG. 4. FIG. 6 illustrates a top sectional view of an exemplary display assembly 14 to further illustrate said exemplary flow paths. Each display assembly 14 may comprise a cover panel 17 that faces an intended viewer. An electronic display 11 may be located behind, spaced apart from, and substantially parallel to the cover panel 17. Cover panel 17 may be comprised of any substantially transparent or translucent material and may be comprised of multiple layers. The electronic display 11 may be any type of electronic display 11, including but not limited to, a liquid crystal display (LCD), light emitting diode (LED) display, organic LED (OLED) display, plasma display, or the like. The space between the rear surface of the cover panel 17 and the front surface of the electronic display 11 may define a first channel 25. A display assembly housing 15 may surround the electronic display 11 such that the combination of the cover panel 17 and the display assembly housing 15 substantially encloses the electronic display 11. One or more of the display assemblies 14 may further configured to receive touch input. For example, without limitation, the electronic display 11 may comprise a capacitive or resistive touch screen and related components required to operate said touch screen, though any type of touch screen is contemplated.

A backlight 21 may be located behind and substantially parallel to the electronic display 11. The backlight 21 may be spaced apart from the electronic display 11, though such is not required. A second channel 23 may be located within the display assembly 14 and may be configured to receive ambient air 38. The second channel 23 may permit ambient air 38 to flow substantially vertically through the display assembly 14 from top to bottom, or from the bottom to the top. In exemplary embodiments, the second channel 23 is defined, at least in part, by the space between the rear surface of the backlight 21 and the rear surface of the display assembly housing 15, though any location is contemplated.

A first and a second side channel 32 may extend along either side of the display assembly 14. The side channels 32 may be configured to receive circulating gas 36. In exemplary embodiments, the side channels 32 are defined, at least in part, by the space between the second channel 23 and the side of the display assembly housing 15, though any location is contemplated.

One or both sides of the frame 12 may comprise a side gap 13 located between interior and exterior side panels. As such, the assembly 10 may comprise a first and a second side gap 13, where each is located on either side of the frame 12. In other exemplary embodiments, the assembly 10 may comprise only a first side gap 13. Apertures may be located along the interior panels of the side(s) of the frame 12 having the side gap(s) 13 such that circulating gas 36 may be passed from the electronics cavity 12 into and out of the side gap(s) 13. In exemplary embodiments, the circulating gas 36 may flow from the first side gap 13, though the first side channel 32, though the first channel 25, through the second side channel 32, through the second side gap 13, though the electronics cavity 18, and be returned to the first side gap 13, thereby forming a closed loop. In exemplary embodiments where the assembly 10 comprises only the first side gap 13, the circulating gas 36 may pass directly from the electronics cavity 18 into or out of the first or the second side channel 32. Additionally, the circulating gas 36 may be split and travel through first channel 25 located in each respective display assembly 14. Stated another way, the closed loop may pass through each display assembly 14 and return to the cavity 18. It is notable that the side gaps 13 are optional.

One or more fans 34 may be mounted to said apertures in the interior panels of the side of the frame 12 to force the circulating gas 36 though the closed loop, though it is contemplated that any number of fans 34 may be placed at any number of locations along the path of the circulating gas 36.

The bottom and top of the frame 12 may similarly comprise interior and exterior panels with an upper gap 41 and a lower gap 40 located therebetween, though such is not required. Apertures may be located along the exterior panels of the bottom and top of the frame 12 such that ambient air 38 may be ingested from outside of the assembly 10 and exhausted from inside of the assembly 10. These apertures may form the exhaust 9 and the intake 16. In exemplary embodiments, ambient air 38 may be ingested from the bottom of the assembly 10 into the lower gap 40. The ambient air 38 may then travel vertically upwards through the second channel 23 in the display assembly 14 and into the upper gap 41. The ambient air 38 may then be exhausted through the intake 16, thus forming an open loop. In the exemplary embodiments, the ambient air 38 may be split and travel through each of the second channels 23 located in each of the respective display assemblies 14.

One or more fans 34 may be mounted to said apertures in the exterior panels of the bottom of the frame 12 to force the ambient air 38 though the open loop, though it is contemplated that any number of fans 34 may be located in any number of locations along the path of the ambient air 38.

In exemplary embodiments where the display assembly 14 is an electronic display, the ambient air 38 flowing through the second channel 23 may be in thermal communication with the backlight 21 so as to absorb heat generated therefrom, though such is not required. In exemplary embodiments where the display assembly 14 is an illuminated poster holder, the ambient air 38 flowing through the second channel 23 may be in thermal communication with the illumination devices so as to absorb heat generated therefrom, though such is not required. In still other exemplary embodiments where the display assembly 14 is a cover, the ambient air 38 may optionally flow through a second channel 23 located in the cover, though such is not required. Regardless, the ambient air 38 flowing through the second channel 23 may be in thermal communication with circulating gas 36 flowing through the closed loop such that the relatively cool ambient air 38 may remove heat from the relatively warm circulating gas 36. The ambient air 38 flowing through the open loop may be in thermal communication with the circulating gas 32 flowing through the closed loop so as to absorb heat therefrom while not allowing the ambient air 38 and the circulating gas 32 to substantially mix. For example, without limitation, the ambient air 28 traveling through the second channel 23 may be in thermal communication with the circulating gas 38 flowing through the cavity 18.

It is notable that the use of airflow channels, such as but not limited to, the first channel 25, the second channel 23, and the side channels 32 may not be required in embodiments where the display assembly 14 is a poster holder or cover. In such embodiments, the airflow may be directed into the remaining display assembly 14 comprising such airflow channels. If no such display assembly 14 is utilized, the airflow may simply circulate within the cavity 18. In some exemplary embodiments, the poster holder or cover may still utilize some or all of aforementioned the airflow channels. Regardless, the number of fans utilized may be reduced or increased to accommodate the number of airflow channels used.

FIG. 7 is a front perspective view similar to FIG. 1 of another exemplary embodiment of the assembly 10 also indicating section lines A-A and B-B.

FIG. 8 is a front perspective view of the assembly 10 of FIG. 7 illustrated with both display assemblies 14 in the open position. The plate 19 may be mounted to one of the display assemblies 14. In other exemplary embodiments, the plate 19 may form a part of the display assembly 14. Many or all of the electronic components 30 may still be shared by the display assemblies 14.

The shared electronic components 30 may be located on the plate, though such is not required. In exemplary embodiments, the display assemblies 14 of the same type (e.g., electronic displays, poster holders, or covers), including the electronic components 30 located on or in the display assemblies 14, are substantially identical for the front or rear facing display assembly 14 of the same type (e.g., when both display assemblies 14 comprise electronic displays or both display assemblies 14 comprise poster holders) such that the two may be interchanged. In this way, a single type of display assembly 14 to be used to replace any of that type display assembly 14 or may be freely substituted with a different type display assembly 14. For example, without limitation, a separate front and back display assembly 14 need not be stored as spares for a single assembly 10. Instead, a single spare display assembly 14 may be used to replace either the front or back display assembly 14. This may reduce the need to store additional spare display assemblies 14. Stated another way, a display assembly 14 comprising an electronic display may be placed on either the front or the rear of the assembly. Likewise, a display assembly 14 comprising an electronic display may be freely substituted with a display assembly 14 comprising a cover.

FIG. 9 is a front perspective exploded view of the assembly of FIG. 8. An electronics plate 42 may be mounted to the frame 12, though such is not required. The electronics plate 42 may be located in an upper portion of the electronics cavity 18, though any location is contemplated. The electronics plate 42 may be mounted so as to extend substantially parallel with the front surface of the display assemblies 14 when the display assemblies 14 are in the closed position. The electronics plate 42 may be configured to receive the electronics components 30 and additional electronic components 44, which may be mounted thereto. In exemplary embodiments, the additional electronic components 44 may comprise customer-specific or customer-installed electronic components or other components for operating the assembly 10. However, any type of electronic components 44 and 30 are contemplated, such as but not limited to, computers, processors, routers, servers, machine to machine communications equipment, wireless connectivity devices, Bluetooth connectivity devices, near field communication devices, cameras, electronic storage devices, memory, and the like. In exemplary embodiments, the electronics plate 42 may comprise a server rack, such as but not limited to, a 1 U server rack.

By placing the display assemblies 14 in the opened position, the electronics cavity 18, the plate 19, the electronics plate 42, the related electronic components 30 and additional electronic components 44 may be serviced. Additionally, the display assemblies 14 themselves may be serviced by removing the display assemblies from the hinging device 22 as previously discussed.

Various pass through devices 35 may be located in the fame 12 or other walls defining the cavity 18 such that power lines, communication lines, and the like may be passed into the cavity 18 from outside. These pass through devices 35 may be configured to provide a substantially air and water tight seal, though such is not required. In other embodiments, the pass through devices 35 may provide a level of ingress and egress protection. Any number and location of said pass through devices 35 are contemplated. This may help to reduce the number of entry and exit points in the assembly 10 and simplify the cabling. The pass through devices 35 may provide a connection/disconnection point for wiring and cabling. The cavity 18 may provide a substantially sealed, cooled, connected, and/or powered electronics cavity 18 for mounting electronic components, such as but not limited to, the additional electronic components 44 and the electronic components 30.

FIG. 9 illustrates an exemplary assembly 10 where the fans 24 for the ambient air 38 may be located on the top of the frame 12 in the apertures of the upper gap 41.

FIG. 10 is a top sectional view taken along section line A-A of FIG. 7 and illustrating exemplary display assemblies 14 in the closed position, where the display assemblies 14 comprise electronic displays. The second channel 23 may comprise a corrugation layer 46 located between the backlight 21 and the electronics cavity 18. The ambient air 38 may pass through the corrugation layer 46. As illustrated in FIG. 10, the assembly 10 may only comprise the first side gap 13. It is contemplated that the first side gap 13 may be located on either side of the assembly 10 or may not be required at all. It is further contemplated that a corrugation layer 46 may be utilized in display assemblies 14 comprising a poster holder or cover.

FIG. 11 is a side sectional view taken along section line B-B of FIG. 7. As illustrated in FIG. 11, the lower gap 40 is optional. Instead, ambient air 38 may enter via the exhaust 9 and be ingested directly into the display assemblies 14 where it may travel through the second channel 23 to the upper gap 41 and exit via the intake 16.

FIG. 12A and FIG. 12B is a rear perspective view of another exemplary assembly 10. FIGS. 12A-12B illustrates how the display assemblies 14 may be rotated outward along a substantially horizontal axis or a substantially vertical axis. The display assemblies 14 may act as an access panel. In exemplary embodiments where the display assemblies 14 are covers, the display assembly 14 may be comprised of sheet metal, though any type of material is contemplated. In other exemplary embodiments, where the display assembly 14 comprises a poster holder configured to hold a static poster, the display assembly 14 may comprise a transparent cover located above a plate to define a poster cavity, which may be configured hold the poster therebetween. Illumination devices may be placed within, around, or along the poster cavity to provide backlighting or edge lighting to illuminate the poster.

In exemplary embodiments, the display assemblies 14 may swing open horizontally (as shown in FIG. 12A) or vertically (as shown in FIG. 12B). In exemplary embodiments where the display assembly 14 swings open vertically, aid devices 20 may likewise be used to assist in moving the display assembly 14 between the open and closed positions as well as securing the display assembly 14 in the open and closed positions.

Although the flow of the ambient air 38 and the circulating gas 36 may be shown and described herein with respect to particular directions and orientations, it is contemplated that the ambient air 38 and the circulating gas 36 may flow in other directions. For example, without limitation, ambient air 38 and circulating gas 36 shown as flowing clockwise may flow counter-clockwise, when shown flowing vertically from top to bottom may flow from bottom to top, when shown flowing horizontally from right to left may flow from left to right, when shown flowing vertically may flow horizontally, when shown flowing horizontally may flow vertically, and the like.

It is contemplated that the assembly 10, or various components thereof, may be adapted for and/or used with any size display assemblies 14 in any application. For example, but not to serve as a limitation, the assembly 10, or various components thereof, may be adapted for and/or used with a vehicle topper unit such as is illustrated and described in U.S. patent application Ser. No. 15/450,365 filed Mar. 6, 2017, the disclosures of which are hereby incorporated by reference in their entirety.

FIG. 13 is a front perspective view of another exemplary assembly 100 also indicating Detail A. FIG. 13 through FIG. 18B illustrate and describe an adaptation of the assembly 10 for use with a vehicle topper unit as previously mentioned. Similar features have been similarly numbered but increased by 100 (e.g., assembly 10 and assembly 100). The assembly 100 may comprise a frame 112 which may be rectangular in shape, though any shape is contemplated. The frame 112 may be covered by cladding that forms a housing. The cladding may provide an aesthetically pleasing appearance and may improve aerodynamics. The frame 112 may be adapted to be mounted to the roof of a vehicle, though such is not required. A first and second display assembly 114 may be attached to the frame 112, though any number of display assemblies 114 are contemplated. In exemplary embodiments, the first and second display assemblies 114 are placed back-to-back on either side of the frame 112. The assembly 100 may further comprise a pair of mounting devices 150. In exemplary embodiments, the mounting devices 150 may be located on the underside of the frame 112 and may be feet configured to permit the assembly 100 to be mounted to the roof of a vehicle, though any type of mounting device 150 is contemplated.

A fan 134 may be located on an aperture in the frame 112 and may be configured to permit the ingestion of ambient air 138. Once ingested, the ambient air 138 may travel horizontally through channels in the display assemblies 114 and exit through apertures on the other end of the frame 112. This may form an open loop. It is contemplated that the fan 134 may be located at any location along the path of the ambient air 138.

FIG. 14 is a front perspective view of the assembly 100 of FIG. 13 illustrated with one of the display assemblies 114 in the open position. The display assemblies 114 may be hingedly mounted to the frame 112 by way of a hinging device 122. The hinging device 122 may permit the display assemblies 114 to be moved between a closed position, wherein the respective display assembly 114 rests against or is located in close proximity with the frame 112 and/or where the front surface of the respective display assembly 114 is substantially perpendicular to the ground, and an open position wherein the respective display assembly 114 is rotated outwardly from the frame 112 and/or at least one edge of the display assembly 114 is moved away from the frame 112. A gasket 128 may extend around the perimeter of the surfaces of the frame 112 which contact the display assemblies 114. The gaskets 128 may be configured to provide a substantially air tight seal in the electronics cavity 118 when the display assemblies 114 are located in the closed position.

An electronics cavity 118 may be located between the rear surfaces of the display assemblies 114. The electronics cavity 118 may comprise a plate 142 that is configured to receive a number of electronic components 130 or additional electronic components 144 which may be mounted thereto. In exemplary embodiments, the plate 142 may be mounted to the frame 112. In other exemplary embodiments, the plate 142 may be mounted to, or form a part of, one of the display assemblies 114. Various pass through devices 135 may be located in the walls defining the cavity 118 such that power lines, communication lines, and the like may be passed into the cavity 118 from outside. The pass through devices 135 may be configured to provide a substantially air and water tight seal or otherwise provide ingress and egress protection. This may help to reduce the number of pass through points in the assembly 100 and simplify the cabling. Additionally, the pass through devices 135 may provide a single or limited number of connection or disconnection points for removing the wiring for servicing the display assemblies 114. In exemplary embodiments, the electronics cavity 118 may provide a cooled, powered, connected, and/or sealed area for electronic components, such as but not limited to, the electronic components 130 and the additional electronic components 144.

When either or both the of display assemblies 114 are placed in the open position, the electronics cavity 118 may be exposed. This may allow access to the electronics cavity 118, the plate 142, and the electronic components 130 such that personnel may service the electronic components 130 located therein. In exemplary embodiments, the display assemblies 114 may be selectively locked to the frame 112 such that the respective display assembly 114 cannot normally be moved from the closed position unless unlocked. This may assist in restricting access to the electronics cavity 118 to authorized personnel.

The frame 112 may comprise interior and exterior surfaces. In exemplary embodiments, a lower gap 140 may be located in the space between the interior and exterior surfaces of the frame 112 along a lower portion thereof. Stated another way, the lower gap 140 may be located between the bottom of the electronics cavity 118 and the bottom of the frame 112.

FIG. 15 is a rear perspective view of the assembly 100 of FIG. 13 is illustrated with both of the display assemblies 114 in the open position and also indicating Detail B. A first and second strut 152 may extend between the frame 112 and each of the respective display assemblies 114. In other exemplary embodiments, a pair of struts 152 may be used for each respective display assembly 114. The strut 152 may be configured to temporarily secure the respective display assembly 114 in the opened position, although it is contemplated that the strut 152 may be configured to also temporarily secure the respective display assembly 114 in the closed position. Alternatively, any of the aid devices 20 may be utilized in conjunction with or in substitution of the struts 152.

In exemplary embodiments, the struts 152 may be mounted to each of the respective display assemblies 114 in a rotatable fashion. The struts 152 may be mounted in a rotatable fashion by way of a pin, bearing, hinge, fastener, or the like, though any device or mounting configuration is contemplated. Regardless, the struts 152 may be configured to be temporarily secured to each of the respective display assemblies 114 such that the respective display assembly 114 is propped or otherwise held in the open position. While the struts 152 are discussed as being mounted to each of the respective display assemblies 114 and temporarily secured to the frame 112, it is contemplated that the struts 152 may instead be mounted to frame 112 and temporarily secured to each of the respective display assemblies 114.

FIG. 16 is a front perspective view of the assembly 100 of FIG. 14 illustrated with one of the display assemblies 114 removed. Circulating gas 136 may travel vertically through the electronics cavity 118 where it is separated and passes through each respective display assembly 114. In exemplary embodiments, the circulating gas 136 flows through a channel between a cover glass an electronic display in each of the respective display assemblies 114. The circulating gas 136 may then travel through the lower gap 140 and be returned to the electronics cavity 118 via apertures in the interior surfaces of the frame 112, thereby forming a closed loop. In exemplary embodiments, these apertures in the frame 112 may have fans 134 mounted thereto to move the circulating gas 136 through the closed loop, though it is contemplated that the fans 134 may be located anywhere along the path of the circulating gas 136.

U.S. patent application Ser. No. 15/450,365 filed Mar. 6, 2017, the disclosures of which are hereby incorporated by reference in their entirety, describes an exemplary thermal management system for the assembly 100 including, but not limited to, open and closed loop pathways for ambient air and circulating gas.

It is contemplated that either or both of the display assemblies 114 may comprise an electronics display, a poster holder, or a cover. It is further contemplated that some or all of the electronic components 130 used to operate the display assemblies 114 may be located on the plate 142. It is also contemplated that the display assemblies 114 of the same type (e.g., comprising an electronic display, poster holder, or cover) may be substantially identical, such that the display assemblies 114 located on the left or right side of the assembly 100 may be freely substituted.

FIG. 17 is a detailed top perspective view of Detail A of FIG. 13. The hinging device 122 may comprise a first and second display hinge plate 156, a first frame hinge plate 154, and a second frame hinge plate 158. Each of the first and second display hinge plates 156 may be substantially “L” shaped and may be configured to extend between a rear surface of the respective display assemblies 114 and the first frame hinge plate 154. The first frame hinge plate 154 may be mounted to either end of the frame 112. Optionally, a second frame hinge plate 158 may be located on the other side of the first and second display hinge plates 156 such that the first and second display hinge plates 156 are sandwiched between the first frame hinge plate 154 and the second frame hinge plate 158. It is contemplated that the second display hinge plate 156 may not be required, but may be used to provide added strength and stability. Additionally, the second hinge plate 158 may be configured to extend behind a portion of the display assemblies 114 so as to serve as a backstop.

A first fastener 127 may extend through the first frame hinge plate 154, the first display hinge plate 156, and the second frame hinge plate 158. Likewise, a second fastener 127 may extend through the first frame hinge plate 154, the second display hinge plate 156, and the second frame hinge plate 158. The fastener 127 may be a pin or another device permitting rotational movement of the first and second display hinge plates 156. In exemplary embodiments, the second frame hinge plate 158 may be selectively secured to the respective display assembly 114 such that the respective display assembly 114 may be temporarily secured in the closed position. The frame hinge plate 156, the display hinge plate 154, and the fasteners 127 may be configured to bear all or substantially all of the weight of the respective display assembly 114.

The design of the hinge device 122 may provide for easy removal of one or both of the display assemblies 114 when servicing the assembly 100. The fasteners 127 may be removed from either side of the respectively display assembly 114 and the entire display assembly 114 may be removed. Additionally, the disconnection of wiring, along with other steps, may be required. A replacement display assembly 114 may then be installed. Additionally, the connection of wiring, along with other steps, may be required. The display assembly 114 being serviced may then be returned to a service center for servicing. This may minimize downtime of the assembly 100.

FIG. 18A is a detailed perspective view of Detail B of FIG. 15 also illustrating the otherwise hidden strut 152. FIG. 18B is a top perspective view of the assembly 100 of FIG. 18A illustrated with the display assembly 114 in the open position. As can be seen, the strut 152 may be moved between a supporting and a stored position. The strut 152 may rotated into the stored position such that the strut 152 is substantially aligned with the display assembly 114 when the display assembly 114 in the closed position. In this way, the strut 152 is no longer bearing the weight of the display assembly 114 and may be stored within the respective display assembly 114 when the strut 152 is not being used to keep the display assembly 114 in the open position. The strut 152 may be rotated into the supporting position where the strut 152 is secured at an angle to the frame 112 such that the display assembly 114 may be propped or otherwise held in the open position. In exemplary embodiments, the strut 152 may comprise a notch 153 configured to be temporarily secured to a corresponding bracket or groove located on the frame 112 such that the strut 152 bears some or all of the weight of the display assembly 114 so as to prop or hold the respective display assembly 114 in the open position.

Any embodiment of the present invention may include any of the optional or preferred features of the other embodiments of the present invention. The exemplary embodiments herein disclosed are not intended to be exhaustive or to unnecessarily limit the scope of the invention. The exemplary embodiments were chosen and described in order to explain the principles of the present invention so that others skilled in the art may practice the invention. Having shown and described exemplary embodiments of the present invention, those skilled in the art will realize that many variations and modifications may be made to the described invention. Many of those variations and modifications will provide the same result and fall within the spirit of the claimed invention. It is the intention, therefore, to limit the invention only as indicated by the scope of the claims. 

What is claimed is:
 1. A field serviceable apparatus comprising: a frame having an upper edge, a lower edge, a first side edge, and a second side edge; a first and second display assembly, mounted to the frame in a back to back arrangement, wherein at least one of the display assemblies comprises: a transparent layer; an electronic display located behind the transparent layer; a first channel configured to receive circulating gas; and a second channel configured to receive ambient air; a cavity defined by rear surfaces of the first and second display assemblies and the upper edge, the lower edge, the first side edge, and the second side edge of the frame; a fixed plate attached to said frame and positioned entirely within the cavity, wherein said fixed plate is spaced apart from, the rear surface of said first and second display assemblies, and wherein said fixed plate is configured to receive a plurality of electronic components; a closed loop pathway comprising said cavity and said first channel; and an open loop pathway comprising said second channel; wherein each of said first and second display assemblies are mounted to said frame in a hinged fashion for movement between a closed position where said closed loop pathway, including said cavity, is sealed, and an opened position where said fixed plate is accessible.
 2. The field serviceable apparatus of claim 1 further comprising: a first and second frame hinge plate located on the frame; and a first and second display hinge plate located on each of the first and second display assemblies, wherein the first and second frame hinge plates are configured to interact with the first and second display hinge plates so as to permit the first and second display assemblies to rotate outward.
 3. The field serviceable apparatus of claim 2 further comprising: a plurality of fasteners; and a plurality of apertures or notches located in the first and second frame hinge plates and the first and second display hinge plates, wherein the apertures or notches are so located such that the respective display assembly may be mounted to the frame by way of a single fastener extended through the first or second frame hinge plate and into the first or second display hinge plate.
 4. The field serviceable apparatus of claim 3 wherein: the plurality of fasteners are pins; and the pins are configured to bear substantially the entire weight of the display assembly for which the pins are used.
 5. The field serviceable apparatus of claim 1 wherein: the first channel is located between the transparent layer and the electronic display.
 6. The field serviceable apparatus of claim 5 wherein: the second channel is located behind the electronic display.
 7. The field serviceable apparatus of claim 1 wherein: the apparatus is configured to be mounted to the ground.
 8. The field serviceable apparatus of claim 1 wherein: the apparatus is configured to be mounted to the roof of vehicle.
 9. The field serviceable apparatus of claim 1 further comprising: a connector configured to be placed in electrical connection with an external power source and a communications network.
 10. The field serviceable apparatus of claim 1 wherein: at least one of the display assemblies is configured to accommodate a static poster.
 11. The field serviceable apparatus of claim 2 wherein: the first and second display assemblies are configured to be rotated between an open position and a closed position; and the cavity is configured to remain substantially air tight while the first and second display assemblies are located in the closed position.
 12. A field serviceable assembly for displaying images comprising: a frame having a rectangular shape; a first and second display assembly mounted to the frame in a back to back arrangement and in a hinged fashion, wherein each of the first and second display assemblies comprises: a transparent panel; an electronic display layer located behind the transparent panel; a first channel configured to receive circulating gas, wherein said first channel is positioned between the transparent panel and the electronic display layer; and a second channel configured to receive ambient air, wherein said second channel is located behind the electronic display layer; a cavity located entirely in the space between a rear surface of the first display assembly, a rear surface of the second display assembly, a top surface of the frame, a lower surface of the frame, a first side surface of the frame, and a second side surface of the frame, wherein said cavity is configured to receive the circulating gas; a plate extending from said frame and positioned entirely within the cavity between and spaced apart from the rear surfaces of the first and second display assemblies, wherein said plate is configured to receive a plurality of electronic components; and a sealed closed loop pathway comprising said cavity and said first channel of said first and second display assembly; wherein the plate is configured to remain in a fixed located upon rotational movement of the first and second electronic display assemblies between an opened position where said plate is accessible and a closed positions where the sealed closed loop pathway, including the cavity, is isolated from ambient air.
 13. The field serviceable assembly of claim 4 further comprising: a number of pass through devices located on the frame and configured to permit cabling to pass into the cavity.
 14. The field serviceable assembly of claim 12 wherein: said plate comprises a server rack.
 15. The field serviceable assembly of claim 12 further comprising: a first and second aid device configured to assist in moving the first and second display assemblies, respectively, between the opened position and the closed position.
 16. The field serviceable assembly of claim 12 wherein: the first and second frame hinge plates are located on opposing sides of said frame; and the first and second display hinge plates are located along an upper edge of said electronic display assemblies such that said electronic display assemblies are configured for rotational movement about a substantially horizontal axis.
 17. The field serviceable assembly of claim 12 wherein: the first and second frame hinge plates are located on the same side of said frame; and the first and second display hinge plates are located along the same side of said electronic display assemblies such that said electronic display assemblies are configured for rotational movement about a substantially vertical axis. 